Author Question: A boy throws a rock with an initial velocity of at 30.0 above the horizontal. How long does it take ... (Read 32 times)

kellyjaisingh

  • Hero Member
  • *****
  • Posts: 540
A boy throws a rock with an initial velocity of at 30.0 above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory if air resistance is negligibly small and g = 9.80 m/s2?
 
  A) 0.160 s
  B) 0.282 s
  C) 0.313 s
  D) 0.441 s

Question 2

The acceleration due to gravity on the Moon is only one-sixth of that on Earth, and the Moon has no atmosphere.
 
  If you hit a baseball on the Moon with the same effort (and therefore at the speed and angle) as on Earth, how far would the ball would travel on the Moon compared to on Earth? Neglect air resistance on Earth. A) 1/6 as far as on Earth
  B) 36 times as far as on Earth
  C) the same distance as on Earth
  D) 6 times as far as on Earth
  E) as far as on Earth



xoxo123

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

A

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

For a complete list of videos, visit our video library